Home / 15,215.52-20,995.32-8,500.32

Finding the Fourth Proportional to 15,215.52, 20,995.32 and 8,500.32

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Solution

The fourth proportional to 15,215.52, 20,995.32 and 8,500.32 is: 11,729.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.52 : 20,995.32 = 8,500.32 : x
  2. Step 2: Convert to fraction form
    15,215.52/20,995.32 = 8,500.32/x
  3. Step 3: Cross multiply
    15,215.52x = 20,995.32 × 8,500.32
  4. Step 4: Simplify right side
    15,215.52x = 178,466,938.50
  5. Step 5: Solve for x
    x = 178,466,938.50/15,215.52
  6. Step 6: Final answer
    x = 11,729.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.